CN202668883U - Anti-vacuum deformation injection mold of battery case - Google Patents

Abstract

The utility model discloses an anti-vacuum deformation injection mold for a battery case, which comprises a movable mold, a fixed mold and a mold core; the movable mold and the fixed mold are arranged oppositely, and the mold core is installed in the mold cavity of the fixed mold. An air passage is provided on the fixed mold; an air passage is provided in the mold core, an air inlet is provided at the bottom thereof, an air needle is installed on the air inlet, and the air needle is connected with the air passage on the fixed mold. Connected to each other, an air outlet is provided on the top of the mold core, and the air outlet communicates with the mold cavity. Because the utility model adds an air needle and an air channel in the mold core and connects the air channel on the fixed mold, when the injection filling is finished, the gas enters the air channel of the mold core through the air channel on the fixed mold, so that Inflate the air channel of the mold core, and the gas forms a positive pressure between the mold core and the product. When the mold core is separated from the product, the gas fills the vacuum gap between the mold core and the product, so that the atmospheric pressure inside and outside the product is equal, ensuring that the product No deformation.

Description

Anti-vacuum deformation injection mold for battery case

technical field

The utility model relates to a plastic mold, in particular to a vacuum deformation-proof injection mold for a battery shell. the

Background technique

As shown in Figure 1, during the injection molding process of the battery case product 10, a vacuum gap will be formed between the product 10 and the core when the product 10 is ejected, which will cause the suction caused by the vacuum during the ejection process of the product. Severe deformation (as shown in Figure 2) makes the molded case fit poorly during installation, resulting in product function failure. the

Utility model content

The purpose of the utility model is to provide a battery shell anti-vacuum deformation injection mold with accurate product size. the

To achieve the above object, the technical solution of the utility model is:

The utility model is an anti-vacuum deformation injection mold for a battery case, which includes a movable mold, a fixed mold and a mold core; the movable mold and the fixed mold are arranged oppositely, and the mold core is installed in the cavity of the fixed mold; An air passage is provided on the fixed mold; an air passage is provided in the mold core, an air inlet is provided at the bottom thereof, an air needle is installed on the air inlet, and the air needle is connected with the air passage on the fixed mold Through, an air outlet is opened on the top of the mold core, and the air outlet communicates with the mold cavity.

The utility model also includes an electronic travel switch and an air electromagnetic valve; the electronic travel switch is installed on the outer wall of the movable mold and is close to the parting surface; the valve body of the air electromagnetic valve is installed on the outer wall of the fixed mold, and the air electromagnetic valve valve The core is set in the air passage of the fixed mold to control the on-off of the gas in the air passage. the

After adopting the above scheme, since the utility model adds an air needle and an air channel in the mold core and connects the air channel on the fixed mold, when the mold is opened, the electronic travel switch is activated to control the air solenoid valve to enter Gas and exhaust; when the injection molding is finished, the gas enters the air channel of the mold core through the air channel on the fixed mold, so that the air channel of the mold core is inflated, and the gas forms a positive pressure between the mold core and the product. When the mold core When leaving the product, the gas fills the vacuum gap between the mold core and the product, making the atmospheric pressure inside and outside the product equal, ensuring that the product does not deform. the

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further. the

Description of drawings

Figure 1 is an axonometric view of battery case products;

Fig. 2 is an axonometric view after deformation of conventional battery case products;

Fig. 3 is an axonometric view of the utility model;

Fig. 4 is the axonometric view of the mold core of the present utility model;

Fig. 5 is a schematic diagram of the installation of the mold core of the utility model.

Detailed ways

As shown in Figure 3 and Figure 4, the utility model is an anti-vacuum deformation injection mold for a battery case, which includes a movable mold 1, a fixed mold 2, a mold core 3, an air needle 4, an electronic travel switch 5 and an air solenoid valve 6. the

The movable mold 1 and the fixed mold 2 are arranged oppositely, and the mold core 3 is installed in the cavity of the fixed mold 2 . Offer air passage on the described stationary mold 2. the

Described in mold core 3, be provided with air channel, offer air inlet hole at its bottom, install air needle 4 on air inlet hole, this air needle 4 is connected with the air channel on the fixed mold 2, in mold type The top of the core 3 offers an air outlet, which communicates with the mold cavity. the

The electronic travel switch 5 is installed on the outer wall of the movable mold 1 and close to the parting surface; the valve body of the air solenoid valve 6 is installed on the outer wall of the fixed mold 2, and the air supply signal of the molding machine is controlled by the air solenoid valve 6 to reach the mold. After the mold is opened, the ejection and blowing are carried out simultaneously. the

The working principle of the utility model:

When the mold is opened, the electronic travel switch 5 is activated to control the air intake and exhaust of the air solenoid valve 6; when the injection filling is completed, the electronic travel switch 5 drives the air solenoid valve 6 to act, and the gas passes through the air passage on the fixed mold 2 Enter the air channel of the mold core 3 to inflate the air channel of the mold core 3, and the gas forms a positive pressure between the mold core 3 and the product 10 (as shown in Figure 1). When the mold core 3 is separated from the product, the gas fills the mold The vacuum gap between the core 3 and the product 10 makes the atmospheric pressure inside and outside the product 10 equal to ensure that the product 10 does not deform.

The key process of the utility model:

As shown in Figure 5, the structure of the mold core 3 adopts corner cooling (cooling by the ice water circulation system) to avoid the corner effect of the product during the injection molding cooling process. Through CAE (computer-aided analysis software) Mold-Flow, the temperature difference of each corner of the product is analyzed, so that the corners of the product can be fully cooled according to the results of the analysis when designing the mold structure.

Emphasis of the present utility model just is: offer air channel on mold core. the

The above is only a preferred embodiment of the utility model, and the airway outlet on the mold core can be determined according to needs, so the scope of the utility model can not be limited with this, that is, according to the scope of patent application and the specification of the utility model The equivalent changes and modifications made in the content should still fall within the scope covered by the utility model patent. the

Claims (2)

1. A battery shell anti-vacuum deformation injection mold, which includes a movable mold, a fixed mold and a mold core; the movable mold and the fixed mold are relatively arranged, and the mold core is installed in the cavity of the fixed mold; it is characterized in that : the air passage is set on the fixed mould; the air passage is provided in the mold core, an air inlet is provided at the bottom thereof, an air needle is installed on the air inlet, and the air needle is connected with the air inlet on the fixed mould. The channels are connected, and an air outlet is set on the top of the mold core, and the air outlet communicates with the mold cavity. 2. The anti-vacuum deformation injection mold for battery case according to claim 1, characterized in that it also includes an electronic travel switch and an air solenoid valve; the electronic travel switch is installed on the outer wall of the movable mold and close to the parting surface; The air solenoid valve body is installed on the outer wall of the fixed mold.

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